For Sale:  BMW 535i

*Here's a researched summation by Google Gemini of the difference you can expect between RWD and xDrive:

RWD Prevails: The Non-xDrive 2012 BMW 535i Offered a Sharper, More engaging Drive

For the 2012 BMW 535i, while the on-paper acceleration numbers were surprisingly close, the non-xDrive (rear-wheel-drive) version delivered a notably better and more traditional BMW performance experience, primarily through superior handling dynamics, steering feel, and overall agility.

Straight-Line Speed: A Near Tie

In pure straight-line acceleration, the difference between the two models was marginal. Most tests from the era placed the 0-60 mph time for both the RWD and xDrive 535i in the 5.6 to 5.7-second range.

While the xDrive system's all-wheel-drive traction could theoretically offer an advantage from a standstill, this benefit was effectively canceled out by its significant weight penalty. The xDrive hardware added approximately 180 pounds to the 535i's curb weight. On a dry, ideal surface, this meant the lighter, more efficient RWD model could launch just as effectively, with some tests giving it a razor-thin edge of a tenth of a second.

The Real Difference: Handling and Driving Feel

The true performance advantage of the rear-wheel-drive 535i was evident the moment the road began to curve. Automotive enthusiasts and professional reviewers consistently favored the RWD model for its more engaging and purer driving dynamics.

Key advantages of the non-xDrive 535i included:

* Purer Steering Feel: The F10-generation 5 Series featured different steering systems across its lineup. The RWD 535i used an electric power steering system that, while criticized by some purists, was generally considered to be lighter and provide more feedback than the hydraulic system used in the xDrive models. The xDrive's steering was frequently described as heavier, more insulated, and less communicative, dulling the connection between the driver and the road.

* Superior Agility and Balance: With less weight over the front axle, the RWD model felt more nimble and eager to turn into corners. The classic rear-drive balance allowed for more neutral handling and the ability for skilled drivers to induce and control oversteer with the throttle—a hallmark of the "Ultimate Driving Machine" experience. The xDrive model, by contrast, was more prone to understeer when pushed to its limits.

* Sportier Suspension Options: Critically, the rear-wheel-drive models could be equipped with the optional M Sport suspension, which featured stiffer springs and dampers for a more controlled ride and flatter cornering. This option was not available on xDrive models, limiting their ultimate handling potential from the factory.

* A More "Playful" Character: The sum of these parts was a car that simply felt more alive. The non-xDrive 535i delivered the classic "push" from the rear that enthusiasts expect from a BMW sedan, making for a more dynamic and rewarding experience on a spirited drive. The xDrive, while offering unshakable stability and all-weather confidence, felt more sedate and less thrilling in comparison.

In conclusion, while an owner of a 2012 535i xDrive gives up very little in terms of outright acceleration, they sacrifice a significant measure of the handling precision, steering engagement, and playful character that defined the non-xDrive model's superior performance. 

The best way to see for yourself is to contact me for a test drive.   Bob@Alfa.Farm